Terry Rozier had just put the Celtics ahead 99-96 by nailing a three with 0.5 seconds left in regulation.
The Bucks are implementing a "blackout" of the BMO Harris Bradley Center during their series with Boston, wearing black, using their black "Fear the Deer" court and encouraging fans to wear black, giving away black t-shirts for games three and four.
Giannis will have help this year in the form of a new back court featuring a healthy Jabari Parker and newcomer Eric Bledsoe.
Middleton then took the inbounds pass and quickly nailed a contested 35-foot three.
Al Horford led the way for Boston with 24 points and 12 rebounds, while Rozier added 23 points.
More than half of the United Kingdom wants public vote on Brexit deal
The People's Vote campaign is aiming to unite anti-Brexit groups and a rally is taking place in Camden, London on Sunday. Asked what he would say to people who voted for Brexit, he told the programme "what we are doing is in their benefit".
Saudi king slams US Jerusalem move
President Donald Trump's controversial decision to recognize Jerusalem as Israel's capital and shift the U.S. embassy there. But Saudi Arabia's crown prince struck a somewhat different tone during a United States tour earlier this month.
Jason Roy pummels DD to a last ball victory against MI
I usually like to take some time and build my innings. "We figured that one of the top four have to stick around and finish". But as they say - you never know in the game of cricket, we shall wait and watch who triumphs.
Jayson Tatum: This was a strong playoff debut by the 20-year-old rookie, finishing with 19 points on 8-for-18 shooting as part of a double-double that included 10 rebounds which made him just the third Celtics rookie all-time to tally a double-double in their first playoff game.
The Bucks never truly threatened from that point on, as Milwaukee continued to foul and Boston continued to knock down its free throw attempts. He scored 21 points off the bench to go with seven rebounds which was also tops among reserves for both teams.
Middleton ended the game second behind Giannis Antetokounmpo with 31 points, eight rebounds and five assists.